EP0126917A2 - Device for introducing dosed quantities of powdery materials into a pneumatic fluid, and its application to a distributing bin - Google Patents

Device for introducing dosed quantities of powdery materials into a pneumatic fluid, and its application to a distributing bin Download PDF

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Publication number
EP0126917A2
EP0126917A2 EP84103907A EP84103907A EP0126917A2 EP 0126917 A2 EP0126917 A2 EP 0126917A2 EP 84103907 A EP84103907 A EP 84103907A EP 84103907 A EP84103907 A EP 84103907A EP 0126917 A2 EP0126917 A2 EP 0126917A2
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EP
European Patent Office
Prior art keywords
housing
reservoir
tank
sockets
bushing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP84103907A
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German (de)
French (fr)
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EP0126917A3 (en
EP0126917B1 (en
Inventor
Edouard Legille
Pierre Mailliet
Jeannot Loutsch
Jean-Pierre Welter
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Paul Wurth SA
Original Assignee
Paul Wurth SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Paul Wurth SA filed Critical Paul Wurth SA
Priority to AT84103907T priority Critical patent/ATE27793T1/en
Publication of EP0126917A2 publication Critical patent/EP0126917A2/en
Publication of EP0126917A3 publication Critical patent/EP0126917A3/en
Application granted granted Critical
Publication of EP0126917B1 publication Critical patent/EP0126917B1/en
Expired legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G53/00—Conveying materials in bulk through troughs, pipes or tubes by floating the materials or by flow of gas, liquid or foam
    • B65G53/34—Details
    • B65G53/40—Feeding or discharging devices
    • B65G53/46—Gates or sluices, e.g. rotary wheels
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F11/00—Apparatus requiring external operation adapted at each repeated and identical operation to measure and separate a predetermined volume of fluid or fluent solid material from a supply or container, without regard to weight, and to deliver it
    • G01F11/10—Apparatus requiring external operation adapted at each repeated and identical operation to measure and separate a predetermined volume of fluid or fluent solid material from a supply or container, without regard to weight, and to deliver it with measuring chambers moved during operation
    • G01F11/12—Apparatus requiring external operation adapted at each repeated and identical operation to measure and separate a predetermined volume of fluid or fluent solid material from a supply or container, without regard to weight, and to deliver it with measuring chambers moved during operation of the valve type, i.e. the separating being effected by fluid-tight or powder-tight movements
    • G01F11/20—Apparatus requiring external operation adapted at each repeated and identical operation to measure and separate a predetermined volume of fluid or fluent solid material from a supply or container, without regard to weight, and to deliver it with measuring chambers moved during operation of the valve type, i.e. the separating being effected by fluid-tight or powder-tight movements wherein the measuring chamber rotates or oscillates
    • G01F11/24—Apparatus requiring external operation adapted at each repeated and identical operation to measure and separate a predetermined volume of fluid or fluent solid material from a supply or container, without regard to weight, and to deliver it with measuring chambers moved during operation of the valve type, i.e. the separating being effected by fluid-tight or powder-tight movements wherein the measuring chamber rotates or oscillates for fluent solid material

Definitions

  • the present invention relates to a device for introducing metered quantities of pulverulent materials into a pneumatic propulsion fluid, comprising a housing traversed, at least in part, axially by a pressurized fluid and provided with a lateral opening in communication with a reservoir of pulverulent materials, in which there is a pressure greater than that of the propellant fluid, this housing containing two coaxial sockets of which the one which is inside is provided with an axial bore for the passage of the propellant fluid and whose at least one is movable about its longitudinal axis and is connected, for this purpose, to a suitable driving device, each of the sockets being provided with a slot at the lateral opening of the housing so that these slots can more or less overlap or hide each other by rotation of the movable sleeve and thus define a more or less large passage between the material reservoir pu and the propellant flowing through the inner sleeve.
  • the invention also relates to a direct application of such devices to a powder distribution tank.
  • a device for metering and extracting pulverulent materials from a distribution tank of the aforementioned type is proposed by the Luxembourg patent application no. 84 462.
  • This metering device has been designed more specifically for the application to the injection of solid fuels into a shaft furnace.
  • a metering device for each wind-carrier or, at most, for each pair of wind-carrier so that it is necessary to associate a whole series of metering devices with the distribution tank. and intermediate storage of the pulverulent material. Therefore, for maintenance needs, including disassembly a duseur it f d uL or provide a shutoff valve between each dispenser and the reservoir, either accept the necessity of having to disable any tank and any dosing for the maintenance of one of them.
  • the object of the present invention is to provide an improved metering device of the aforementioned kind, which allows their individual disassembly without the need to have recourse to a stop valve.
  • An accessory object of the invention is the direct application, in particular the mounting of such dosers, on a powder distribution tank.
  • the device proposed by the invention is essentially characterized by a third mobile coaxial socket, disposed between the housing and the two coaxial sockets, this third socket being provided with a lateral opening corresponding to said lateral opening of the housing and a control mechanism for rotating this third socket around its longitudinal axis.
  • Said control mechanism can be constituted simply by a lever integral with said third socket.
  • means are provided for locking said lever and the socket in a first angular position in which the opening of the socket and that of the housing are superimposed and in a second angular position offset by 180 ° from said first angular position.
  • the housing and the third socket, on the one hand, and the rest of the dispenser with the first two sockets, on the other hand, can be separated as a unit by axial translation.
  • the third bush acts as a valve and allows, in the case of the association of several dosers to a distributor, to dismantle each doser individually, without having to put the others out of service.
  • This design also makes it possible to provide safety means which do not allow the metering unit to be dismantled until said lever occupies said second angular position, corresponding to the isolation of the metering unit from the reservoir.
  • the invention also provides a reservoir for distributing pulverulent materials, the extraction of the reservoir of which is carried out pneumatically through a series of dosers of the aforementioned type and which is characterized in that the bottom of the reservoir has a conical shape, the point of which penetrates inside the tank and in that the said metering devices are integrated into the tank at the intersection of the side wall and the conical bottom.
  • This design is achievable thanks to the fact that it is no longer necessary to provide intermediate stop valves between the metering units and the tank and provides the advantage of a more compact construction, less bulky and easier to maintain.
  • Each metering device is advantageously inclined relative to the side wall of the dispensing tank so that its longitudinal axis is substantially perpendicular to the conical surface generated by the bisector of the angle between the side wall and the bottom of the tank.
  • the device for metering and introducing metered quantities of pulverulent materials into a pneumatic propulsion fluid is similar to that proposed by the Luxembourg patent application no. 84 462.
  • This device comprises in particular a cylindrical housing 10 inside which there are two coaxial sockets 12 and 14.
  • the outer sleeve 12 is fixed and integral with the housing 10, while the inner sleeve 14 can rotate around the longitudinal axis O.
  • the two sockets 12 and 14 each have a slot 16, respectively 18 which, by the rotation of the movable socket 14, can be superimposed to allow maximum passage of the pulverulent material in the chamber 20 provided inside the movable socket 14, or partially or totally hide each other to reduce or cut the passage of powdery materials towards the chamber 20.
  • the rotation of the movable sleeve 14 is ensured by means of a device known per se, shown in broken lines 22 and described in more detail in the aforementioned patent application.
  • the housing 10 has a lateral opening 24 for the admission of the pulverulent material through the slots 16 and 18 into the interior chamber 20, in which mixing takes place with the pressurized air admitted through a pipe 26.
  • the difference between the device proposed by the present invention and the aforementioned patent application lies in the presence of an intermediate cylindrical bush 28 provided between the housing 10 and the fixed bush 12.
  • This intermediate bush 28 is also movable around the axis 0 and is also provided with a lateral opening 30 corresponding exactly to the opening 24 in the housing 10.
  • This socket 28 has the function of a valve insofar as in superposition of the two openings 24 and 30, the valve is open and allows the pulverulent material to pass through the slots 16 and 18 (see FIG. 1), while after rotation of the sleeve, in particular by 180 ° as shown in FIG. 2, the passage of the pulverulent material towards the interior of the chamber 20 is interrupted.
  • the rotation of the sleeve 28, that is to say the operation of what may be called a valve, can be carried out manually by a simple handle 32 integral with the sleeve 28.
  • the references 34 symbolize locks intended to lock the valve either in the open position of figure 1, or in the closed position of figure 2.
  • the body of the device formed by the two inner sockets 12 and 14 and by the mechanism 22 for driving the movable socket 14, is separable in block, by axial translation, from the rest formed by the housing 10 and the intermediate sleeve 28.
  • FIG. 3 shows the housing 10 and the sleeve 28 after extraction from the body of the device.
  • the purpose of the socket 28 is the isolation of the pulverulent material reservoir with a view to dismantling the valve body, it is possible to provide safety means which only allow the body of the device to be extracted in the closed position of the socket 28 and of the handle 32 as illustrated in FIG. 3.
  • a device can be constituted simply by a bayonet connection comprising, for example, a set of peripheral grooves of the socket 12 with an internal lug from socket 28, or vice versa.
  • the box 10 can be mounted directly on the distribution tank represented schematically by the reference 40 in FIGS. 1 to 3.
  • FIG. 4 schematically shows the integration of dosers as described above to a tank! for distributing the pulverulent material, in particular coal powder.
  • the reservoir 40 with a side wall 48, preferably substantially cylindrical, has a bottom 50, of conical shape, the point of which penetrates towards the interior of the reservoir 40.
  • This FIG. 4 also shows two metering devices 42 and 44, incorporated directly into the reservoir 40 by mounting at the intersection of the side wall 48 and the bottom 50. This mounting can be carried out by welding the housing 10 to the bottom 50 and to the wall 48.
  • the reference 46 schematically symbolizes other dosers distributed regularly at the base of reservoir 40.
  • the metering units 42, 44, 46 are preferably inclined relative to the reservoir 40 so that their longitudinal axis is substantially perpendicular to a virtual conical surface generated by the bisector of the angle formed between the side wall 48 and the bottom conical 50 of the tank.

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  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Filling Or Emptying Of Bunkers, Hoppers, And Tanks (AREA)
  • Air Transport Of Granular Materials (AREA)
  • Nozzles (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Medicinal Preparation (AREA)
  • Flow Control (AREA)

Abstract

Le dispositif est constitué d'un doseur comprenant un boîtier et deux douilles coaxiales (12, 14) pourvues de fentes de dosage (16, 18) qui se masquent mutuellement plus ou moins par rotation de l'une des douilles autour de son axe longitudinal. Pour permettre le démontage des deux douilles (12, 14) il est prévu une troisième douille (28) qui sert de vanne de fermeture. Dans une application avantageuse, un certain nombre de ces doseurs sont intégrés dans la paroi du fond annulaire pointu d'un réservoir (40).The device consists of a metering device comprising a housing and two coaxial sockets (12, 14) provided with metering slots (16, 18) which more or less mask each other by rotation of one of the sockets around its longitudinal axis . To allow disassembly of the two sockets (12, 14) there is provided a third socket (28) which serves as a shut-off valve. In an advantageous application, a certain number of these dispensers are integrated into the wall of the pointed annular bottom of a reservoir (40).

Description

La présente invention concerne un dispositif d'introduction de quantités dosées de matières pulvérulentes dans un fluide de propulsion pneumatique , comprenant un boîtier traversé, au moins en partie, axialement par un fluide sous pression et pourvu d'une ouverture latérale en communication avec un réservoir de matières pulvérulentes , dans lequel règne une pression supérieure à celle du fluide de propulsion, ce boîtier renfermant deux douilles coaxiales dont celle qui se trouve à l'intérieur est pourvue d'un alésage axial pour le passage du fluide de propulsion et dont l'une , au moins, est mobile autour de son axe longitudinal et est reliée, à cet effet, à un dispositif d'entraînement approprié , chacune des douilles étant pourvue d'une fente au niveau de l'ouverture latérale du boîtier de façon que ces fentes puissent plus ou moins chevaucher ou se masquer mutuellement par rotation de la douille mobile et définir ainsi un passage plus ou moins grand entre le réservoir de matières pulvérulentes et le fluide de propulsion traversant la douille intérieure. L'invention concerne également une application directe de tels dispositifs à un réservoir de distribution de matières pulvérulentes.The present invention relates to a device for introducing metered quantities of pulverulent materials into a pneumatic propulsion fluid, comprising a housing traversed, at least in part, axially by a pressurized fluid and provided with a lateral opening in communication with a reservoir of pulverulent materials, in which there is a pressure greater than that of the propellant fluid, this housing containing two coaxial sockets of which the one which is inside is provided with an axial bore for the passage of the propellant fluid and whose at least one is movable about its longitudinal axis and is connected, for this purpose, to a suitable driving device, each of the sockets being provided with a slot at the lateral opening of the housing so that these slots can more or less overlap or hide each other by rotation of the movable sleeve and thus define a more or less large passage between the material reservoir pu and the propellant flowing through the inner sleeve. The invention also relates to a direct application of such devices to a powder distribution tank.

Un dispositif de dosage et d'extraction de matières pulvérulentes d'un réservoir de distribution du genre précité est proposé par la demande de brevet luxembourgeois no. 84 462. Ce doseur a été conçu plus particulièrement pour l'application à l'injection de combustibles solides dans un four à cuve. Dans ce genre d'application, il est prévu un doseur pour chaque porte-vent, ou , tout au plus, pour chaque couple de porte-vent de sorte qu'il est nécessaire d'associer toute une série de doseurs au réservoir de distribution et de stockage intermédiaire de la matière pulvérulente. Par conséquent, pour les besoins d'entretien , notamment de démontage d'un duseur, il fduL, soit prévoir une vanne de fermeture entre chaque doseur et le réservoir , soit accepter la nécessité de devoir mettre hors service tout le réservoir et tous les doseurs pour l'entretien d'un seul d'entre eux.A device for metering and extracting pulverulent materials from a distribution tank of the aforementioned type is proposed by the Luxembourg patent application no. 84 462. This metering device has been designed more specifically for the application to the injection of solid fuels into a shaft furnace. In this type of application, there is provided a metering device for each wind-carrier, or, at most, for each pair of wind-carrier so that it is necessary to associate a whole series of metering devices with the distribution tank. and intermediate storage of the pulverulent material. Therefore, for maintenance needs, including disassembly a duseur it f d uL or provide a shutoff valve between each dispenser and the reservoir, either accept the necessity of having to disable any tank and any dosing for the maintenance of one of them.

Le but de la présente invention est de prévoir un dispositif de dosage perfectionné du genre précité , qui permette leur démontage individuel sans la nécessité d'avoir recours à une vanne d'arrêt. Un but accessoire de l'invention est l'application directe , notamment le montage de tels doseurs, sur un réservoir de distribution de matières pulvérulentes.The object of the present invention is to provide an improved metering device of the aforementioned kind, which allows their individual disassembly without the need to have recourse to a stop valve. An accessory object of the invention is the direct application, in particular the mounting of such dosers, on a powder distribution tank.

Pour atteindre cet objectif, le dispositif proposé par l'invention-est essentiellement caractérisé par une troisième douille coaxiale mobile , disposée entre le boîtier et les deux douilles coaxiales , cette troisième douille étant munie d'une ouverture latérale correspondant à ladite ouverture latérale du boîtier et d'un mécanisme de commande pour faire tourner cette troisième douille autour de son axe longitudinal.To achieve this objective, the device proposed by the invention is essentially characterized by a third mobile coaxial socket, disposed between the housing and the two coaxial sockets, this third socket being provided with a lateral opening corresponding to said lateral opening of the housing and a control mechanism for rotating this third socket around its longitudinal axis.

Ledit mécanisme de commande peut être constitué simplement par une manette solidaire de ladite troisième douille.Said control mechanism can be constituted simply by a lever integral with said third socket.

Dans un mode de réalisation avantageux, il est prévu des moyens pour bloquer ladite manette et la douille dans une première position angulaire dans laquelle l'ouverture de la douille et celle du boîtier sont superposées et dans une seconde position angulaire décalée de 1800 de ladite première position angulaire.In an advantageous embodiment, means are provided for locking said lever and the socket in a first angular position in which the opening of the socket and that of the housing are superimposed and in a second angular position offset by 180 ° from said first angular position.

En vue de l'entretien du doseur, le boîtier et la troisième douille , d'une part, et le reste du doseur avec les deux premières douilles, d'autre part, sont séparables en bloc par translation axiale.For maintenance of the dispenser, the housing and the third socket, on the one hand, and the rest of the dispenser with the first two sockets, on the other hand, can be separated as a unit by axial translation.

Par conséquent, la troisième douille fait fonction de vanne et permet, dans le cas de l'association de plusieurs doseurs à un distributeur, de démonter chaque doseur individuellement , sans devoir mettre les autres hors service.Consequently, the third bush acts as a valve and allows, in the case of the association of several dosers to a distributor, to dismantle each doser individually, without having to put the others out of service.

Cette conception permet, en outre, de prévoir des moyens de sécurité ne permettant le démontage du doseur que lorsque ladite manette occupe ladite seconde position angulaire, correspondant à l'isolation du doseur du réservoir.This design also makes it possible to provide safety means which do not allow the metering unit to be dismantled until said lever occupies said second angular position, corresponding to the isolation of the metering unit from the reservoir.

A titre d'application avantageuse, l'invention propose également un réservoir de distribution de matières pulvérulentes dont l'extraction du réservoir est réalisée par voie pneumatique à travers une série de doseurs du genre précité et qui est caractérisé en ce que le fond du réservoir possède une forme conique dont la pointe pénètre à l'intérieur du réservoir et en ce que lesdits doseurs sont intégrés au réservoir à l'intersection de la paroi latérale et du fond conique.By way of advantageous application, the invention also provides a reservoir for distributing pulverulent materials, the extraction of the reservoir of which is carried out pneumatically through a series of dosers of the aforementioned type and which is characterized in that the bottom of the reservoir has a conical shape, the point of which penetrates inside the tank and in that the said metering devices are integrated into the tank at the intersection of the side wall and the conical bottom.

Cette conception est réalisable grâce au fait qu'il n'est plus nécessaire de prévoir des vannes intermédiaires d'arrêt entre les doseurs et le réservoir et procure l'avantage d'une construction plus compacte , moins-encombrante et plus facile à entretenir.This design is achievable thanks to the fact that it is no longer necessary to provide intermediate stop valves between the metering units and the tank and provides the advantage of a more compact construction, less bulky and easier to maintain.

Chaque doseur est avantageusement incliné par rapport à la paroi latérale du réservoir de distribution de telle manière que son axe longitudinal soit sensiblement perpendiculaire à la surface conique engendrée par la bissectrice de l'angle entre la paroi latérale et le fond du réservoir.Each metering device is advantageously inclined relative to the side wall of the dispensing tank so that its longitudinal axis is substantially perpendicular to the conical surface generated by the bisector of the angle between the side wall and the bottom of the tank.

D'autres particularités et caractéristiques ressortiront de la description détaillée d'un mode de réalisation préféré , présenté ci-dessous à titre d'illustration, en référence aux dessins annexés , dans lesquels :

  • la figure 1 présente schématiquement une coupe axiale à travers un dispositif selon la présente invention ;
  • la figure la représente schématiquement une vue du dispositif suivant la flèche A de la figure l ;
  • les figures 2 et 2a représentent respectivement des vues correspondant à celles des figures 1 et la, mais représentant le doseur en position fermée et en condition de démontage ;
  • les figures 3 et 3a représentent respectivement des vues correspondant à celles des figures 1 et la , mais avec le corps du dispositif démonté et
  • la figure 4 représente schématiquement un réservoir _ distribution équipé de doseurs selon la présente invention.
Other particularities and characteristics will emerge from the detailed description of a preferred embodiment, presented below by way of illustration, with reference to the appended drawings, in which:
  • Figure 1 schematically shows an axial section through a device according to the present invention;
  • FIG. 1a schematically represents a view of the device according to arrow A in FIG. 1;
  • Figures 2 and 2a respectively show views corresponding to those of Figures 1 and la, but showing the metering device in the closed position and in disassembly condition;
  • FIGS. 3 and 3a respectively represent views corresponding to those of FIGS. 1 and 1a, but with the body of the device removed and
  • FIG. 4 schematically represents a dispensing tank fitted with metering devices according to the present invention.

Le dispositif de dosage et d'introduction de quantités dosées de matières pulvérulentes dans un fluide de propulsion pneumatique , représenté sur les figures 1 et 2 est analogue à celui proposé par la demande de brevet luxembourgeois no. 84 462. Ce dispositif comporte notamment un boîtier cylindrique 10 à l'intérieur duquel se trouvent deux douilles coaxiales 12 et 14 . Dans le mode de réalisation représenté, la douille extérieure 12 est fixe et solidaire du boîtier 10 , tandis que la douille intérieure 14 peut tourner autour de l'axe longitudinal O.The device for metering and introducing metered quantities of pulverulent materials into a pneumatic propulsion fluid, represented in FIGS. 1 and 2 is similar to that proposed by the Luxembourg patent application no. 84 462. This device comprises in particular a cylindrical housing 10 inside which there are two coaxial sockets 12 and 14. In the embodiment shown, the outer sleeve 12 is fixed and integral with the housing 10, while the inner sleeve 14 can rotate around the longitudinal axis O.

Les deux douilles 12 et 14 comportent chacune une fente 16 , respectivement 18 qui , par la rotation de la douille mobile 14 , peuvent être superposées pour permettre un passage maximal de la matière pulvérulente dans la chambre 20 prévue à l'intérieur de la douille mobile 14 , ou se masquer mutuellement en partie ou totalement pour réduire ou couper le passage de matières pulvérulentes en direction de la chambre 20. La rotation de la douille mobile 14 est assurée au moyen d'un dispositif connu en soi , représenté en traits interrompus 22 et décrit plus en détail dans la demande de brevet précitée.The two sockets 12 and 14 each have a slot 16, respectively 18 which, by the rotation of the movable socket 14, can be superimposed to allow maximum passage of the pulverulent material in the chamber 20 provided inside the movable socket 14, or partially or totally hide each other to reduce or cut the passage of powdery materials towards the chamber 20. The rotation of the movable sleeve 14 is ensured by means of a device known per se, shown in broken lines 22 and described in more detail in the aforementioned patent application.

Le boîtier 10 comporte une ouverture latérale 24 pour l'admission de la matière pulvérulente à travers les fentes 16 et 18 dans la chambre intérieure 20, dans lesquelles s'effectue le mélange avec l'air sous pression admis à travers une tubulure 26.The housing 10 has a lateral opening 24 for the admission of the pulverulent material through the slots 16 and 18 into the interior chamber 20, in which mixing takes place with the pressurized air admitted through a pipe 26.

La différence entre le dispositif proposé par la présente invention et la demande de brevet précitée réside dans la présence d'une douille cylindrique intermédiaire 28 prévue entre le boîtier 10 et la douille fixe 12. Cette douille intermédiaire 28 est également mobile autour de l'axe 0 et est, en outre, pourvue d'une ouverture latérale 30 correspondant exactement à l'ouverture 24 dans le boitier 10. Cette douille 28 a la fonction d'une vanne dans la mesure où en superposition des deux ouvertures 24 et 30 , la vanne est ouverte et permet le passage de la matière pulvérulente à travers les fentes 16 et 18 ( voir figure 1 ) , tandis qu'après rotation de la douille, notamment de 180° comme représenté sur la figure 2 , le passage de la matière pulvérulente vers l'intérieur de la chambre 20 est interrompu.The difference between the device proposed by the present invention and the aforementioned patent application lies in the presence of an intermediate cylindrical bush 28 provided between the housing 10 and the fixed bush 12. This intermediate bush 28 is also movable around the axis 0 and is also provided with a lateral opening 30 corresponding exactly to the opening 24 in the housing 10. This socket 28 has the function of a valve insofar as in superposition of the two openings 24 and 30, the valve is open and allows the pulverulent material to pass through the slots 16 and 18 (see FIG. 1), while after rotation of the sleeve, in particular by 180 ° as shown in FIG. 2, the passage of the pulverulent material towards the interior of the chamber 20 is interrupted.

La rotation de la douille 28, c'est-à-dire la manoeuvre de ce qui peut être appelé une vanne , peut être effectuée manuellement par une simple manette 32 solidaire de la douille 28. Les références 34 symbolisent des verrous destinés à verrouiller la vanne soit dans la position ouverte de la figure 1 , soit dans la position fermée de la figure 2.The rotation of the sleeve 28, that is to say the operation of what may be called a valve, can be carried out manually by a simple handle 32 integral with the sleeve 28. The references 34 symbolize locks intended to lock the valve either in the open position of figure 1, or in the closed position of figure 2.

Selon l'une des caractéristiques de la présente invention , le corps du dispositif, formé par les deux douilles intérieures 12 et 14 et par le mécanisme 22 d'entraînement de la douille mobile 14, est séparable en bloc, par translation axiale , du reste formé par le boîtier 10 et la douille intermédiaire 28. La figure 3 montre le boîtier 10 et la douille 28 après extraction du corps du dispositif.According to one of the characteristics of the present invention, the body of the device, formed by the two inner sockets 12 and 14 and by the mechanism 22 for driving the movable socket 14, is separable in block, by axial translation, from the rest formed by the housing 10 and the intermediate sleeve 28. FIG. 3 shows the housing 10 and the sleeve 28 after extraction from the body of the device.

Etant donné que le but de la douille 28 est l'isolation du réservoir de matières pulvérulentes en vue du démontage du corps de la vanne, il est possible de prévoir des moyens de sécurité qui ne permettent l'extraction du corps du dispositif que dans la position fermée de la douille 28 et de la manette 32 comme illustré sur la figure 3. Un tel dispositif peut être constitué simplement par une connection à baïonnette comprenant, par exemple, un jeu de rainures phériphé- riques de la douille 12 avec un ergot intérieur de la douille 28, ou vice-versa.Given that the purpose of the socket 28 is the isolation of the pulverulent material reservoir with a view to dismantling the valve body, it is possible to provide safety means which only allow the body of the device to be extracted in the closed position of the socket 28 and of the handle 32 as illustrated in FIG. 3. Such a device can be constituted simply by a bayonet connection comprising, for example, a set of peripheral grooves of the socket 12 with an internal lug from socket 28, or vice versa.

Etant donné que la douille 28 permet la suppression d'une vanne entre le doseur et le réservoir de distribution , le boîtier 10 peut être monté directement sur le réservoir de distribution représenté schématiquement par la référence 40 sur les figures 1 à 3.Since the socket 28 allows the removal of a valve between the metering device and the distribution tank, the box 10 can be mounted directly on the distribution tank represented schematically by the reference 40 in FIGS. 1 to 3.

La figure 4 représente schématiquement l'intégration de doseurs tels que décrits ci-dessus à un réservoir ! de distribution de la matière pulvérulente, notamment de la poudre de charbon. Le réservoir 40 , avec une paroi latérale 48, de préférence sensiblement cylindrique , comporte un fond 50, de forme conique dont la pointe pénètre vers l'intérieur du réservoir 40. Cette figure 4 montre également deux doseurs 42 et 44, incorporés directement au réservoir 40 par montage à l'intersection de la paroi latérale 48 et du fond 50. Ce montage peut être effectué par soudage du boitier 10 au fond 50 et à la paroi 48. La référence 46 symbolise schématiquement d'autres doseurs répartis régulièrement à la base du réservoir 40.Figure 4 schematically shows the integration of dosers as described above to a tank! for distributing the pulverulent material, in particular coal powder. The reservoir 40, with a side wall 48, preferably substantially cylindrical, has a bottom 50, of conical shape, the point of which penetrates towards the interior of the reservoir 40. This FIG. 4 also shows two metering devices 42 and 44, incorporated directly into the reservoir 40 by mounting at the intersection of the side wall 48 and the bottom 50. This mounting can be carried out by welding the housing 10 to the bottom 50 and to the wall 48. The reference 46 schematically symbolizes other dosers distributed regularly at the base of reservoir 40.

Les doseurs 42, 44, 46 sont de préférence inclinés par rapport au réservoir 40 de telle manière que leur axe longitudinal soit sensiblement perpendiculaire à une surface conique virtuelle engendrée par la bissec- trice de l'angle formé entre la paroi latérale 48 et le fond conique 50 du réservoir.The metering units 42, 44, 46 are preferably inclined relative to the reservoir 40 so that their longitudinal axis is substantially perpendicular to a virtual conical surface generated by the bisector of the angle formed between the side wall 48 and the bottom conical 50 of the tank.

Claims (7)

1. Dispositif d'introduction de quantités dosées de matières pulvérulentes dans un fluide de propulsion pneumatique, comprenant un boîtier traversé, au moins en partie, axialement par un fluide sous pression et pourvu d'une ouverture latérale en communication avec un réservoir de matières pulvérulentes, dans lequel règne une pression supérieure à celle du fluide de propulsion, ce boitier renfermant deux douilles coaxiales dont celle qui se trouve à l'intérieur est pourvue d'un alésage axial pour le passage du fluide de propulsion et dont l'une, au moins, est mobile autour de son axe longitudinal et est reliée, à cet effet, à un dispositif d'entraînement approprié, chacune des douilles étant pourvue d'une fente au niveau de l'ouverture latérale du boîtier de façon que ces fentes puissent plus ou moins chevaucher ou se masquer mutuellement par rotation de la douille mobile et définir ainsi un passage plus ou moins grand entre le réservoir de matières pulvérulentes et le fluide de propulsion traversant la douille intérieure, caractérisé par une troisième douille coaxiale mobile (28), disposée entre le boîtier (10) et les deux douilles coaxiales (12, 14), cette troisième douille (28) étant munie d'une ouverture latérale (30) correspondant à ladite ouverture latérale (24) du boîtier (10) et d'un mécanisme de commande pour faire tourner cette troisième douille (28) autour de son axe longitudinal (0).1. Device for introducing metered quantities of pulverulent materials into a pneumatic propulsion fluid, comprising a housing traversed, at least in part, axially by a pressurized fluid and provided with a lateral opening in communication with a reservoir of pulverulent materials , in which there is a pressure higher than that of the propulsion fluid, this housing containing two coaxial sockets of which the one which is inside is provided with an axial bore for the passage of the propulsion fluid and one of which, at less, is movable around its longitudinal axis and is connected, for this purpose, to a suitable driving device, each of the sockets being provided with a slot at the lateral opening of the housing so that these slots can more or overlap or hide each other by rotation of the movable bushing and thus define a more or less large passage between the pulverulent material reservoir and the propellant fluid ion passing through the inner bushing, characterized by a third mobile coaxial bushing (28), disposed between the housing (10) and the two coaxial bushings (12, 14), this third bushing (28) being provided with a lateral opening (30 ) corresponding to said lateral opening (24) of the housing (10) and of a control mechanism for rotating this third bushing (28) about its longitudinal axis (0). 2. Dispositif selon la revendication 1, caractérisé en ce que ledit mécanisme de commande est constitué par une manette (32) solidaire de ladite troisième douille (28).2. Device according to claim 1, characterized in that said control mechanism is constituted by a handle (32) integral with said third socket (28). 3. Dispositif selon l'une quelconque des revendications 1 ou 2, caractérisé par des moyens (34) pour bloquer ladite manette (32) et la douille (28) dans une première position angulaire dans laquelle l'ouverture (30) de la douille (28) et celle (24) du boîtier (10) sont superposées et dans une seconde position angulaire décalée de 180 de ladite première position angulaire.3. Device according to any one of claims 1 or 2, characterized by means (34) for locking said handle (32) and the sleeve (28) in a first angular position in which the opening (30) of the sleeve (28) and that (24) of the housing (10) are superimposed and in a second angular position offset by 180 from said first angular position. 4. Dispositif selon la revendication 1, caractérisé en ce que le boitier (10) et la troisième douille (28) d'une part et le reste du doseur avec les deux premières douilles (12, 14) d'autre part, sont séparables en bloc par translation axiale.4. Device according to claim 1, characterized in that the housing (10) and the third socket (28) on the one hand and the rest of the metering device with the two first sockets (12, 14) on the other hand, are separable en bloc by axial translation. 5. Dispositif selon la revendication 4, caractérisé par des moyens de sécurité ne permettant le démontage du doseur que lorsque ladite manette (32) occupe ladite seconde position angulaire, correspondant à l'isolation du doseur du réservoir.5. Device according to claim 4, characterized by safety means allowing the dismantling of the metering device only when said lever (32) occupies said second angular position, corresponding to the isolation of the metering device from the tank. 6. Réservoir de distribution de matières pulvérulentes dont l'extraction du réservoir est réalisée par voie pneumatique à travers une série de doseurs du genre selon l'une quelconque des revendications 1 à 5 , caractérisé en ce que le fond (50) du réservoir (40) possède une forme conique dont la pointe pénètre à l'intérieur du réservoir (40) et en ce que lesdits doseurs (42, 44, 46) sont intégrés au réservoir (40) à l'intersection de la paroi latérale (48) et du fond conique (50).6. Reservoir for distributing pulverulent materials, the extraction of which from the reservoir is carried out pneumatically through a series of dispensers of the kind according to any one of claims 1 to 5, characterized in that the bottom (50) of the reservoir ( 40) has a conical shape, the point of which penetrates inside the tank (40) and in that said metering devices (42, 44, 46) are integrated into the tank (40) at the intersection of the side wall (48) and the conical bottom (50). 7. Dispositif selon la revendication 6, caractérisé en ce que chaque doseur est incliné par rapport à la paroi latérale (48) du réservoir de distribution (40) de telle manière que son axe longitudinal soit sensiblement perpendiculaire à la surface conique engendrée par la bissectrice de l'angle entre la paroi latérale (48) et le fond du réservoir (50).7. Device according to claim 6, characterized in that each metering device is inclined relative to the side wall (48) of the distribution tank (40) so that its longitudinal axis is substantially perpendicular to the conical surface generated by the bisector the angle between the side wall (48) and the bottom of the tank (50).
EP84103907A 1983-04-28 1984-04-07 Device for introducing dosed quantities of powdery materials into a pneumatic fluid, and its application to a distributing bin Expired EP0126917B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT84103907T ATE27793T1 (en) 1983-04-28 1984-04-07 DEVICE FOR INJECTING DOSED QUANTITIES OF POWDERY SUBSTANCES INTO A PNEUMATIC FLUID AND ITS USE IN A DISTRIBUTION TANK.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
LU84780A LU84780A1 (en) 1983-04-28 1983-04-28 DEVICE FOR INTRODUCING QUANTITIES OF POWDERY MATERIALS INTO A PNEUMATIC PROPULSION FLUID AND APPLICATION TO A POWDERY MATERIAL DELIVERY TANK
LU84780 1983-04-28

Publications (3)

Publication Number Publication Date
EP0126917A2 true EP0126917A2 (en) 1984-12-05
EP0126917A3 EP0126917A3 (en) 1985-05-02
EP0126917B1 EP0126917B1 (en) 1987-06-16

Family

ID=19730085

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EP84103907A Expired EP0126917B1 (en) 1983-04-28 1984-04-07 Device for introducing dosed quantities of powdery materials into a pneumatic fluid, and its application to a distributing bin

Country Status (11)

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US (1) US4597694A (en)
EP (1) EP0126917B1 (en)
JP (1) JPS59207323A (en)
AT (1) ATE27793T1 (en)
BR (1) BR8402011A (en)
CA (1) CA1235444A (en)
DE (1) DE3464229D1 (en)
ES (1) ES531725A0 (en)
LU (1) LU84780A1 (en)
PL (1) PL140816B1 (en)
ZA (1) ZA842541B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0270013A2 (en) * 1986-12-04 1988-06-08 Paul Wurth S.A. Process for injection by pneumatic means metered amounts of pulverulent materials into a vessel maintained at variable pressure

Families Citing this family (4)

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Publication number Priority date Publication date Assignee Title
US5104112A (en) * 1990-11-21 1992-04-14 Pitney Bowes Inc. Document feeder having reversibly positioned direct drive separator assembly motor
ITUB20154875A1 (en) * 2015-11-05 2017-05-05 Weightpack Srl FILLING DEVICE FOR DISOMOGENOUS PRODUCTS
CN105712084A (en) * 2016-02-01 2016-06-29 北京理工大学 Gas pressure-driven type even powder supply device and method
JP6999901B2 (en) * 2018-03-26 2022-01-19 株式会社アマング． Powder transfer equipment and powder processing equipment

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FR2344472A1 (en) * 1976-03-18 1977-10-14 Amazonen Werke Dreyer H MACHINE FOR PNEUMATIC SPREADING OF PELLET MATERIALS
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EP0108319A2 (en) * 1982-11-10 1984-05-16 Paul Wurth S.A. Injection arrangement of dosed quantities of pulverulent materials in a pneumatic propulsion fluid and application to the injection of solid fuels into a shaft furnace

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DE187168C (en) *
DE7116914U (en) * 1971-08-05 Brieden K & Co Cylindrical multi-chamber silo for powdery products
DE2412894A1 (en) * 1973-03-19 1974-09-26 Mitsui Shipbuilding Eng UNLOADING DEVICE FOR CONTAINER FOR STORAGE OF POWDER, GRAY AND SIMILAR MATERIAL
FR2344472A1 (en) * 1976-03-18 1977-10-14 Amazonen Werke Dreyer H MACHINE FOR PNEUMATIC SPREADING OF PELLET MATERIALS
GB2086553A (en) * 1980-05-22 1982-05-12 Do Politekh Inst Aeration feeder for coal dust supply to blast furnace hearth
EP0108319A2 (en) * 1982-11-10 1984-05-16 Paul Wurth S.A. Injection arrangement of dosed quantities of pulverulent materials in a pneumatic propulsion fluid and application to the injection of solid fuels into a shaft furnace

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0270013A2 (en) * 1986-12-04 1988-06-08 Paul Wurth S.A. Process for injection by pneumatic means metered amounts of pulverulent materials into a vessel maintained at variable pressure
EP0270013A3 (en) * 1986-12-04 1989-04-26 Paul Wurth S.A. Process for injection by pneumatic means metered amounts of pulverulent materials into a vessel maintained at variable pressure

Also Published As

Publication number Publication date
PL247332A1 (en) 1984-12-17
CA1235444A (en) 1988-04-19
ES8502947A1 (en) 1985-02-16
LU84780A1 (en) 1984-11-28
JPS59207323A (en) 1984-11-24
DE3464229D1 (en) 1987-07-23
ES531725A0 (en) 1985-02-16
EP0126917A3 (en) 1985-05-02
US4597694A (en) 1986-07-01
ATE27793T1 (en) 1987-07-15
BR8402011A (en) 1984-12-04
ZA842541B (en) 1984-12-24
PL140816B1 (en) 1987-05-30
EP0126917B1 (en) 1987-06-16

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